on top of spaghetti

Juma learned the "On Top of Spaghetti" song in school, and entertained us with his rendition of it--skipping lines and a bit out of tune--during dinner.

On top of spaghetti
I had a meatball
'Til somebody sneezed
Aaaa-chooo!
It rolled under the bush
And turned into mush
Early next summer
It grew into a tree
It had lovely meatballs
And tomato sauce!

After about the fifth time, I asked him if meatballs really could grow on trees.

Juma: No!
Sarah: Why not?
Juma: Because!
Sarah: But why? Let's go out and plant a meatball and see what happens.
Juma: No, that won't work.
Sarah: Why can't they grow into trees?
Juma: Because they grow into bushes!

After we laughed and laughed, he finally concluded it's because meatballs are made from meat, which comes from animals, which grow in their mommies. And meatballs don't have seeds.